Mining Machine Navigation via Landmark Verification
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Solution Overview
Problem
Mining machines tend to deviate from their intended traveling paths in mines due to positioning errors, especially when GPS is unavailable, leading to potential collisions with other machines or landmarks, and incorrect correction of navigation errors.
Innovation Solution
A mining machine management system equipped with a detection unit for non-contact landmark positioning and a traveling control unit that corrects the machine's position using pre-registered landmark data, while avoiding using detected objects as landmarks if they are different from the installed ones, to prevent navigation errors and maintain path accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dead reckoning navigation is used to correct position errors, then navigation accuracy is improved, but the risk of misidentifying objects as landmarks increases
Solution Approach 1:
The system uses detection units to continuously monitor objects around the mining machine and provides feedback to the traveling control unit. This feedback mechanism allows the system to verify whether detected objects match pre-registered landmark information before using them for position correction, thereby maintaining navigation accuracy while preventing misidentification errors
Solution Approach 2:
The invention introduces an intermediary verification process between object detection and landmark identification. The traveling control unit acts as a mediator that compares detected objects with pre-registered landmark data, ensuring that only verified landmarks are used for position correction. This intermediary step resolves the contradiction by filtering out false identifications while preserving accurate landmark-based navigation
2Reliability
If landmarks are used for position correction, then navigation reliability is improved, but the system complexity increases
Solution Approach 1:
The system performs preliminary registration of landmark positions and characteristics before the mining machine begins operation. This pre-prepared landmark database allows for reliable position correction during travel without requiring complex real-time decision-making, thereby improving navigation reliability while keeping the operational system relatively simple
Solution Approach 2:
The invention creates a simplified copy or representation of landmark information in the form of pre-registered position data and identification characteristics. This copied landmark information serves as a reference guide for the navigation system, enabling reliable position correction without requiring the full complexity of real-time landmark verification, thus balancing reliability with system simplicity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively reduces the likelihood of mining machines deviating from their paths, enhancing navigation accuracy and preventing collisions by accurately identifying and utilizing pre-registered landmarks for correction, thus improving operational safety and productivity.
Implementation Method 1
a detection unit mounted on a mining machine configured to travel in an unmanned manner in a mine in which a plurality of landmarks is installed, the detection unit being configured to detect a position of the landmark with respect to the mining machine in a non-contact manner
Data Source
AI summary
A mining machine management system includes a detection unit mounted on a mining machine that travels in a mine in which a plurality of landmarks is installed, and which detects a position of the landmark with respect to the mining machine in a non-contact manner, and a traveling control unit which corrects a current position of the mining machine based on a position of the landmark, the position having been obtained in advance, and the position of the landmark obtained by the detection unit and causes the mining machine to travel by dead reckoning navigation, and which does not use at least the position of the landmark detected by the detection unit in causing the mining machine to travel by the dead reckoning navigation, when a vehicle traveling in the mine exists around the position of the landmark detected by the detection unit.